There was an experimental module developed for SR4 that has been requested to port for SR5.
based on this paper:
F. Jiao, J.M. Phillips, J.G. Stinstra, J. Kueger, R. Varma, E. Hsu, J. Korenberg, C.R. Johnson. “Metrics for Uncertainty Analysis and Visualization of Diffusion Tensor Images,” In Proceedings of the 5th international conference on Medical imaging and augmented reality (MIAR), Beijing, China, Springer-Verlag, Berlin, Heidelberg pp. 179--190. September, 2010.
with this example net:

source code here:
www.sci.utah.edu/~chris/fiber_diff_backup